how can I get girls to pay some attention to me?
This is..well, four years late--but you know, personally I love it when a guy just comes up, smiles, and starts some small talk. Make sure to smile, and yes, confidence is key. :)
Confidence!! is the key thats what alll gurls like... maybe try to ask the gurls out... and get to know some of them.. thats the only way you are going to get them to notice you.
The best advice you'll ever hear: